metadata practice and direction: a community perspective
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Metadata practice and direction: a community perspective. Lorcan Dempsey VP Research and Chief Strategist NISO Workshop: Metadata Practices on the Cutting Edge. Washington, May 20 2004. Overview. Metadata. Practice. Community. Directions. Metadata. Metadata?. Schematized …. - PowerPoint PPT PresentationTRANSCRIPT
Metadata practice and direction:
a community perspective
Lorcan Dempsey
VP Research and Chief Strategist
NISO Workshop: Metadata Practices on the Cutting Edge. Washington, May 20 2004.
Overview
MetadataMetadata
CommunityCommunity
PracticePractice
DirectionsDirections
MetadataMetadata
Metadata?
Schematized …Schematized …
… statements about …… statements about …
… resources … resources
Metadata supports operations on resources ….
… and relieves the user of having to have advance knowledge of the characteristics or existence of the resource.
–Know what resources are available
–Know how to play a resource
–Know provenance of a resource
–Know what use policy governs a resource
–Know how to ingest a resource
–Know how to interact with a resource
–Know how to compose/decompose resources
– …
… allows people and machines to work smarter …
Metadata?
In network space metadata will be associated with everything that moves
• Multiple types of information Objects
• Collections
• Services
• People• Organizations
• Places
• Terms
• Formats
• Rights
• … and will support multiple operations
• An example: a library portal
A ‘portal’ example
Common services
Content services
Application services
Presentation services
I need a few
references
Common services
Content services
Application services
Presentation services
authenticationauthentication
Common services
Content services
Application services
Presentation services
Directory: user profileDirectory: user profile
Common services
Content services
Application services
Presentation services
Query brokerQuery broker
Common services
Content services
Application services
Presentation services
Directory: service description
Directory: service description
Common services
Content services
Application services
Presentation services
Content: results listContent: results list
I’d like to get this book.
Common services
Content services
Application services
Presentation services
Request brokerRequest broker
Common services
Content services
Application services
Presentation services
Directory: ILL policyDirectory: ILL policy
Common services
Content services
Application services
Presentation services
Directory: service descriptionDirectory: service description
Common services
Content services
Application services
Presentation services
Content: circ/ILL systemContent: circ/ILL system
I need this article too.
Common services
Content services
Application services
Presentation services
Request brokerRequest broker
Common services
Content services
Application services
Presentation services
openURL resolveropenURL resolver
Common services
Content services
Application services
Presentation services
Directory: local knowledge baseDirectory: local knowledge base
Nearly there …
Common services
Content services
Application services
Presentation services
Directory: service descriptionDirectory: service description
Common services
Content services
Application services
Presentation services
Content: articleContent: article
Directory: ILL policy
Directory: ILL policy
Common services
Content services
Application services
Presentation services
AuthenticationAuthentication
Directory: user profile
Directory: user profile
Query brokerQuery broker
Directory: service description
Directory: service description
Reference dbReference db
Request brokerRequest broker
Circ/ILL systemCirc/ILL systemOpenURL resolverOpenURL resolver
Directory: local knowledge base
Directory: local knowledge base
Article dbArticle db• Metadata for multiple
entities required to support operations.
• This picture could be extended in multiple ways.
• Metadata for multiple entities required to support operations.
• This picture could be extended in multiple ways.
CommunityCommunity
Community?Cultural heritage Media
industry
Web/Internet
LibraryInstructionaltechnology
E-gov
Researchcommunities
Book industry
EAD, MARC AMC, ..
MARC, MODS, DC, RSLP, ..MARC, MODS, DC, RSLP, ..
Onix, …Onix, …
XML, RDF, OWL, …XML, RDF, OWL, …
CSDGM, DDI, NBII, IVOA, …CSDGM, DDI, NBII, IVOA, …
EGMS, AGLS, GILS, …EGMS, AGLS, GILS, …
GEM, DC-ED, IEEE-LOM, SCORM, …GEM, DC-ED, IEEE-LOM, SCORM, …
MPEG, JPEG, …MPEG, JPEG, …
**
**
**
**
Community politics
• ‘Techeology’– Technology as ideology– Communities coming
together in new shared space
– Boundary confusion– Mergers and acquisitions– Political and commercial
skin at risk
• Different– World views– Requirements– Traditions– Legacies– Experience
Ontology recapitulatesideology
Ontology recapitulatesideology
PracticePractice
Simple descriptive metadata!!
‘Element set’
Information model
Encoding
Values/content
Application profile
FRBRINDECSCIDOC…
MARC21DCVRA CoreMODSOnix…
Cataloging rulesControlled vocabs.…
XMLISO2709…
RDF
Interoperability a factor at all these levels .. For example ..
• Encoding
• Element set
• Content/values
• Encoding
• Element set
• Content/values
The interoperable core and communities of practice?
MARCXML
MARC21
ONIXDublinCore
MODS
DublinCore
GEM
SCORMDC-Ed
LOM
Godby, Smith and ChildressGodby, Smith and Childress
Different classes of metadata increasingly a part of complex object models
• SCORM
• METS
• MPEG 21
• …
• Descriptive
• Structural
• Technical
• Administrative– Rights– Preservation– Tracking
• Provenance
DirectionsDirections
Makers and takers in a time of rapid development
• Makers
– Looking over the horizon
– A clean slate
– At the center of their world
– A moving target
– Religious differences
• Takers
– Focus on here and now
– Manage legacy environments
– Multiple systems and services and priorities
– Want stability
– Secular pragmatism
Interoperability is an economic and service issue
• Extract maximum value from investment in – Data (metadata and
content)– Services
• By ensuring that they are – Sharable– Reusable– Recombinable
• Remember:– Element set– Encoding– Value spaces
Cost
• Pressures:– Manage in a world of
resource abundance– Demonstrate value
• Issues– Programmatically
promote metadata from resources where possible
– Assess where intellectual contribution justified
– Increasingly complex relationships between resources
– Bringing together metadata from different policy regimes
Fragmentation of community agreements and standards activities?
Fragmentation of community agreements and standards activities?
Statements
• Trust
• Inference
• Annotation, review, commentary
So what about the Semantic Web then?So what about the Semantic Web then?
Metadata
• Schematized statements about resources
• Historically independent communities of interest overlapping in a network space
• Practitioners faced with high acronymic density, many choices, and often a moving target
• Kaleidoscopic perspective .. May fall into pattern at any minute …
The pattern is new …
The knowledge imposes a pattern and falsifies
For the pattern is new in every moment
The knowledge imposes a pattern and falsifies
For the pattern is new in every moment